Snap-on brush



I Nov. 15, 1960 E. s. BISCHOFF" 2,959,800

SNAP-ON BRUSH Filed July 2, 1958 INVENIOR.

Ji /$6 1M SNAP-ON BRUSH Edward S. Bischolf, 94 Buttery Road, New Canaan, Conn.

Filed July 2, 1958, Ser. No. 746,221

Claims. (Cl. 15-123) This patent application for a snap-on brush is a continuation in part of my patent application, Serial No. 568,775, filed March 1, 1956, for a Liquid Coating Applicator, now Patent No. 2,932,043.

The further improvement which I now disclose and claim in this copending application relates to the design of the brush and means of securing and holding the brush and roller members in assembly. More specifically it provides a snap-on means for attaching the brush to the roller axle which at the same time holds the brush in assembly with the roller.

In the search for improved methods and tools for surface coating with paint and the like, paint brushes and paint rollers have been highly developed and many inventors have been issued patents covering improvements in this art. This applies particularly to roller applicators, both those with internal feed and those the use of which requires dipping the tool in the paint supply. In my above mentioned March 1st, 1956 patent application I described and claimed as my patentable improvement the combination of a brush and a roller into a single applicator tool.

An object of this invention is to provide a brush-roller combination that can be snapped into assembly by pressing the appropriate parts together without screw devices and can likewise be disassembled without tools by merely pressing so as to disengage the parts. This makes for simplicity. The disadvantage of manually disassembling the parts of a tool such as a paint roller and brush when same are saturated with paint can be appreciated. My snap-on design eliminates that disadvantage.

Another object of the improvement is to provide a brush member so designed that said brush member serves as an end closure for the tubular roller reservoir when the roller is of the internal feed type.

Another object is to provide a brush member with a metal mold insert serving as a journal for the roller member of the tool, thus simplifying the tool by reducing the number of parts.

The detailed features of my brush attachment are set out in the attached drawings and in the following specifications and claims:

In the drawings, Fig. 1 is a schematic view of the liquid coating applicator of which the improved brush is a part.

Fig. 2 is a side view of the brush member.

Fig. 3 is an end view of the brush member.

Fig. 4 is a sectional view of the brush member taken along the line 4-4.

Fig. 5 is an enlarged sectional view of the mold insert snap-on device.

Fig. 6 is a side view of the axle, the tip of which engages the snap-on device.

Fig. 7 is an exploded view showing the several parts of the brush assembly.

In designing a brush in such a form as to permit snapping same in place as shown in the drawings, I have nited States Patent found it both practicable and desirable to mount in the base of the brush 8, when molding same of plastic bristles, a mold snap-on insert of hardened metal 9. The said snap-on insert is hollow, is of cylindrical form with spring lips, and is designed so as to cooperate with the hardened metal tip of the axle of the roller 10, to form an end journal on which the roller rotates. The brush member 8, with its insert when snapped on the axle tip 10, serves as an end piece and bearing for the cylindrical roller member 11, and in this fountain coating applicator serves as an end closure for the roller cylinder in which the liquid is retained while being fed through the periphery of the roller. Number 12 is the rigid tubular axle of the tool which communicates with the goose neck frame member 13, likewise of hollow tubing through which feed or paint supply passes to reach the inside of the roller reservoir 11. Number 14 is the handle by which the tool is manipulated and 15 is a suction-pressure pump device mounted on the handle for transferring paint or coating liquid from a supply source, through a flexible tube 16, through the pump 5 member 15, through the goose neck frame 13, and into the center of the roller 11. Paint feed from the center of the roller is through apertures in the periphery of the roller 11, and through apertures in the base of the brush member 8, communicating and transmitting paint 'or liquid through the roller and through the brush as roller and brush are manipulated over the surface in the application process.

To disassemble the several parts of the applicator tool, pressure is applied at the end of the roller member 11, near the goose neck frame 13, causing the brush snap insert 9 to disengage from the axle tip 10, allowing the several parts, brush, roller, axle, and end closure 16, to separate.

In assembly the circular end closure 16 slides over the axle 12 and over the circular boss 17. The end closure has a cylindrical recess 18 which cooperates with the circular boss to serve as a bearing and journal between the axle and said end closure. The circular boss 17 serves as a stop to prevent further lateral movement of the circular end closure 16. The knob 10 at the end of the axle 12 passes through the cylindrical interior of said snap-on insert and between the inwardly projecting lips 19 which lock the circular brush member 8 on the axle 12 and, therefore, prevent lateral movement of said circular brush member 8. The end portion of the axle 12 adjacent the knob 10 located at the tip of the axle is reduced in diameter to provide a bearing 20 and in assembly this bearing 20 cooperates with the cylindrical interior 24 which serves as a journal, permitting rotation or oscillation of the circular brush member on the axle 12. The roller cylinder 11 is located over the axle 12 before the brush member 8 is snapped into place. The brush member 8 has a recessed edge 21 and the end closure 16 has a recessed edge 22, these recessed portions at the periphery of the brush member and end closure providing steps adapted to penetrate and support the roller cylinder 11 in operating position. The brush member has a series of holes 23 which readily permit the transfer of paint from the interior of the paint roller to the elongated bristles 8.

While I have described and explained in the specification and drawings a preferred embodiment of my improved means for attaching a brush member to a roller member and axle of a roller brush applicator device of the type shown, those versed in the art will recognize other applications in the spirit of this invention which I also claim.

What I now desire to secure by Letters Patent is set forth in the following claims:

1. In a paint roller possessing an axle, goose neck frame, and handle for manipulation of the roller, the

improvement which comprises: means defining a stop located on said axle, a circular end closure, adapted to slide over said axle and contact said means defining a stop, a circular brush member, elongated bristles attached to one side of said brush member in a generally axial direction, a snap-on insert centrally located in the opposite side of said brush member, means located at the outer end of said axle to engage said snap-on insert and a roller cylinder adapted to be supported during operation of the paint roller between said circular end closure and said circular brush member, whereby the entire assembly can be readily assembled or disassembled as desired.

2. Claim 1 further characterized in that said snap-on insert has an elongated cylindrical form with inwardly projecting lips at the inner end thereof and said means located at the outer end of said axle to engage said snap-on insert comprises a hardened metal tip adapted to pass through said projecting lips with light pressure during assembly or disassembly and adapted to be retained thereby during operation of the paint roller.

3. In a paint roller possessing an axle, goose neck frame, and handle for manipulation of the roller, the improvement which comprises: a circular boss attached to said axle near said goose neck frame, adaped to serve as a stop, a circular end closure, adapted to slide over said axle, means defining a cylindrical recess in one side of said end closure, adapted to slide over said circular boss, whereby the lateral movement of said end closure is limited and said cylindrical recess and circular boss serve as a bearing and journal between said axle, and said end closure, a circular brush member, elongated bristles attached to one side of said brush member in a generally axial direction, a cylindrical snap-on insert centrally located in the opposite side of said brush member, inwardly projecting lips located at the inner end of said cylindrical insert, a metal knob at the end of said axle, adapted to pass between said lips with light pressure, whereby lateral movement of said brush member is limited, means defining a bearing at the end portion of said axle, adapted to penetrate said cylindrical snap-on insert and serve with said cylindrical insert as a bearing and journal between said axle and said brush member, and a roller cylinder adapted to be supported during the operation of the paint roller between said circular end closure and said circular brush member, whereby the entire assembly can be readily assembled or disassembled as desired.

4. Claim 3 further characterized in that the brush member and the end closure are recessed at their periphery to provide a step, adapted to penetrate and support said roller cylinder.

5. Claim 3 further characterized in that apertures are provided in said brush member, adapted to permit the transfer of paint between the paint roller and the axially extending bristles attached to said brush member.

References Cited in the file of this patent UNITED STATES PATENTS 1,449,198 Rutherford Mar. 20, 1923 1,932,878 Akizawa Oct. 31, 1933 2,169,581 Dadian Aug. 15, 1939 2,306,264 Hart Dec. 22, 1942 2,766,473 Thackara Oct. 16, 1956 FOREIGN PATENTS 7,310 Great Britain Apr. 10, 1893 

